Responses Of The Neuromuscular System To Activity

Question 1

Give five structural responses of the neuromuscular system to exercise

Answer 1

> slow twitch fibres contain more myoglobin
slow twitch fibres have higher density of mitochondria
increased number of muscle fibres recruited due to increased neural stimulation
increased rate of muscle fibre recruitment

Question 2

What is the functional impact of slow twitch fibres containing more myoglobin?

Answer 2

Muscle fibres fatigue less quickly during performance

Question 3

What is the functional impact of slow twitch fibres having higher density of mitochondria?

Answer 3

Increased rate of aerobic respiration to produce ATP

Question 4

What is the functional impact of an increased number of muscle fibres recruited due to increased neural stimulation?

Answer 4

More muscles can contract and relax to create movement

Question 5

What is the functional impact of an increased rate of muscle fibre recruitment?

Answer 5

Greater force production of the muscle

Question 6

What is the functional impact of increased fast twitch muscle fibres recruited in anaerobic exercise?

Answer 6

Muscle fibres work without oxygen and fatigue quickly due to anaerobic respiration

Question 7

What are the benefits of a warmup on the neuromuscular system?

Answer 7

> increased rate of response of the CNS
increased number of muscle fibres recruited
increased rate of muscle fibre recruitment
enables recruitment of additional fast twitch fibre motor units
improved coordination of motor units
increase in strength
retention of important skills
reduced risk of muscle tears

Question 8

What are some responses of the NM system from anaerobic exercise?

Answer 8

> fast twitch muscle hypertrophy
increased number of myofibrils
increased size and strength of contractile proteins
increased number of fast twitch muscle fibres
increased ATP, PC, and glycogen stores
improved tolerance of lactate
improved removal of lactic acid
increased rate of response from CNS
reduction of delayed onset muscle soreness

Question 9

What are some responses of the NM system from aerobic exercise?

Answer 9

> more myoglobin created in muscle cells
more and bigger mitochondria are created in muscle cells
increased oxidative enzymes - increases aerobic cell activity
increased glycogen stores
increased utilisation of fat as an energy source
conversion of 11x to 11a muscle fibres
better recruitment of slow twitch muscle fibres
reduction of delayed onset muscle soreness